Signal supply device, keyboard device and non-transitory computer-readable storage medium

Abstract

A signal supply device according to an embodiment of the present invention includes a generator configured to generate a first sound signal and a second sound signal in accordance with an instruction signal including operation body information corresponding to an operation input to an operation body and linked member information corresponding to a movement of a linked member linked with the operation body and an adjuster configured to adjust a relationship between the first sound signal and the second sound signal on the basis of the operation body information and the linked member information.

What is claimed is: 
     
       1. A signal supply device comprising:
 a sound generator configured to generate a first sound signal and a second sound signal; 
 one or more sensors that detect an operation movement parameter of an operation body imparted by an operation input; 
 a memory storing instructions; and 
 a processor that implements the instructions to execute a plurality of tasks, including:
 a sound generating task that controls the sound generator to generate the first sound signal and the second sound signal in accordance with an instruction signal, including the operation movement parameter of the operation body detected by the one or more sensors, and linked member information corresponding to a movement of a linked member linked with the operation body; and 
 an adjusting task that adjusts a relationship between the first sound signal and the second sound signal on the basis of the detected operation movement parameter and the linked member information. 
 
 
     
     
       2. The signal supply device according to  claim 1 , wherein the relationship includes a relationship in production timing between the first sound signal and the second sound signal. 
     
     
       3. The signal supply device according to  claim 2 , wherein the adjusting task calculates a velocity or acceleration of the operation body on the basis of the detected operation movement parameter and adjusts the relationship in production timing on the basis of the velocity or acceleration. 
     
     
       4. The signal supply device according to  claim 2 , wherein the adjusting task calculates an acceleration of the operation body on the basis of the detected operation movement parameter and adjusts the relationship in production timing so that a time from a production timing of the second sound signal to a production timing of the first sound signal becomes longer as the acceleration is higher. 
     
     
       5. The signal supply device according to  claim 3 , wherein:
 the adjusting task calculates a velocity of the linked member on the basis of the linked member information and changes modes of adjustment of the relationship in production timing according to the velocity, and 
 in a case where the velocity takes on a predetermined value, the adjusting task adjusts the relationship in production timing so that the second sound signal is generated before the first sound signal when the acceleration takes on a first value and the second sound signal is generated after the first sound signal when the acceleration takes on a second value that is smaller than the first value. 
 
     
     
       6. The signal supply device according to  claim 1 , wherein the relationship includes a relationship in output level between the first sound signal and the second sound signal. 
     
     
       7. The signal supply device according to  claim 6 , wherein the adjusting task calculates a velocity of the linked member on the basis of the linked member information and adjusts the relationship in output level on the basis of the velocity. 
     
     
       8. The signal supply device according to  claim 1 , wherein the instruction signal is generated on the basis of a detection result yielded by the one or more sensors, which comprise a plurality of sensors that detect the operation body or the linked member linked with the operation body in a plurality of positions. 
     
     
       9. The signal supply device according to  claim 1 , wherein the instruction signal is generated on the basis of a detection result yielded by the one or more sensors, which comprises one sensor that detects the operation body or the linked member linked with the operation body in a continuous position. 
     
     
       10. The signal supply device according to  claim 1 , wherein:
 the first sound signal represents a musical sound produced by a sounding body of an acoustic musical instrument, and 
 the second sound signal represents a hitting sound produced by a collision between a performance operator operated in causing the sounding body to produce a sound and another member. 
 
     
     
       11. A keyboard device comprising:
 the signal supply device according to  claim 1 ; 
 a plurality of keys each comprising the operation body; and 
 a plurality of hammers each comprising the linked member. 
 
     
     
       12. The keyboard device according to  claim 11 , wherein:
 the plurality of keys include a first key and a second key, and 
 the sound generator is configured to effect a variation in pitch of the first sound signal between a case where the first key is operated and a case where the second key is operated and to effect no variation in pitch of the second sound signal or varies the pitch of the second sound signal with a smaller pitch difference than the variation in pitch of the first sound signal. 
 
     
     
       13. The signal supply device according to  claim 8 , wherein the plurality of sensors detect the operation movement parameter by detecting positions of the operation body at different timings. 
     
     
       14. A non-transitory computer-readable storage medium storing a program executable by a computer to execute a method comprising:
 generating a first sound signal and a second sound signal in accordance with an instruction signal, including an operation movement parameter of an operation body detected by one of more sensors, and linked member information corresponding to a movement of a linked member linked with the operation body; and 
 adjusting a relationship between the first sound signal and the second sound signal on the basis of the detected operation movement parameter and the linked member information. 
 
     
     
       15. The non-transitory computer-readable storage medium according to  claim 14 , wherein the relationship includes a relationship in production timing between the first sound signal and the second sound signal. 
     
     
       16. The non-transitory computer-readable storage medium according to  claim 15 , wherein the adjusting includes calculating a velocity or acceleration of the operation body on the basis of the detected operation movement parameter and adjusting the relationship in production timing on the basis of the velocity or acceleration. 
     
     
       17. The non-transitory computer-readable storage medium according to  claim 14 , wherein the relationship includes a relationship in output level between the first sound signal and the second sound signal. 
     
     
       18. The non-transitory computer-readable storage medium according to  claim 14 , wherein the relationship includes a relationship in tone or pitch between the first sound signal and the second sound signal. 
     
     
       19. The non-transitory computer-readable storage medium according to  claim 14 , wherein:
 the first sound signal represents a musical sound produced by a sounding body of an acoustic musical instrument, and 
 the second sound signal represents a hitting sound produced by a collision between a performance operator operated in causing the sounding body to produce a sound and a different member. 
 
     
     
       20. The non-transitory computer-readable storage medium according to  claim 14 , where the method further comprises generating the instruction signal on the basis of a detection result yielded by the one or more sensors, which comprise a plurality of sensors that detect the operation body or the linked member linked with the operation body in a plurality of positions.